Derive the following formulas: cos 2x =1-2 sin² x
Trigonometry (11th Edition)
11th Edition
ISBN:9780134217437
Author:Margaret L. Lial, John Hornsby, David I. Schneider, Callie Daniels
Publisher:Margaret L. Lial, John Hornsby, David I. Schneider, Callie Daniels
Chapter1: Trigonometric Functions
Section: Chapter Questions
Problem 1RE:
1. Give the measures of the complement and the supplement of an angle measuring 35°.
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![### Derive the Following Formulas:
\[ \cos 2x = 1 - 2\sin^2 x \]](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fc862cb91-9f38-4798-8184-eeecffb4e094%2Fe4cc1555-474b-4755-a3a3-1dac91b6c444%2Fdc0n44x3_processed.png&w=3840&q=75)
Transcribed Image Text:### Derive the Following Formulas:
\[ \cos 2x = 1 - 2\sin^2 x \]
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